Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2013SILVERADO 2500 HD LT, 2D CAB CHASSIS, 6.6L ENG VIN 8, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 534 (BODY CONTROL SYSTEM)COMPONENT LOCATORBODY CONTROL SYSTEM CONNECTOR END VIEWS
2013 Chevrolet Silverado 2500 HD LT, 2D Cab Chassis, 6.6L Eng VIN 8, RWD
Body Control System Connector End Views
2013 Chevrolet Silverado 2500 HD LT, 2D Cab Chassis, 6.6L Eng VIN 8, RWDSECTION Body Control System Connector End Views
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) C1 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A1-A2 | - | - | Not Used |
| A3 | WHT/BLK | 1073 | Ignition Key Resistor Signal |
| A4 | ORN | 1640 | Battery Positive Voltage |
| A5 | - | - | Not Used |
| A6 | WHT | 352 | ALC HDLP Relay Control |
| A7 | YEL/BLK | 1138 | DRL Ambient Light Sensor Low Reference |
| A8 | - | - | Not Used |
| A9 | BLK/WHT | 851 | Ground |
| A10 | LT GRN/BLK | 1137 | DRL Ambient Light Sensor Signal |
| A11 | - | - | Not Used |
| A12 | DK BLU | 1393 | Courtesy Lamp Relay Control |
| B1 | - | - | Not Used |
| B2 | PPL/WHT | 1074 | Ignition Key Resistor Low Reference |
| B3 | GRY | 1901 | Rear Fog Lamp Relay Control - Export |
| B4 | DK GRN/WHT | 1317 | Fog Lamp Relay Control |
| B5 | - | - | Not Used |
| B6 | LT GRN | 1037 | BCM Class 2 Serial Data |
| B7-B8 | - | - | Not Used |
| B9 | LT BLU | 1344 | Trunk Release Relay Control |
| B10 | BLK | 28 | Horn Relay Control |
| B11 | - | - | Not Used |
| B12 | GRY | 2169 | Convertible Top Relay Cover Release Control |
Body Control Module (BCM) C2 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| C1 | DK BLU | 38 | Backup Lamp Relay Control |
| C2 | GRY/BLK | 745 | Left Front Door Ajar Switch Signal |
| C3 | WHT | 193 | Rear Defog Relay Control |
| C4 | ORN | 640 | Battery Positive Voltage |
| C5 | - | - | Not Used |
| C6 | TAN | 159 | Key Out Ignition Switch Signal |
| C7-C8 | - | - | Not Used |
| C9 | PNK/BLK | 109 | Hood Ajar Switch Signal |
| C9 | DK BLU | 2167 | Convertible Top Cover Ajar Switch Supply Voltage |
| C10 | PPL | 681 | Secondary Rear Defog Switch Signal |
| C11 | LT GRN | 2166 | Convertible Top Cover Release Switch Supply Voltage |
| C12 | RED/BLK | 744 | Trunk Ajar Switch Signal |
| C13 | DK BLU | 2167 | Convertible Top Cover Ajar Switch Supply Voltage |
| C14 | LT GRN/BLK | 80 | Key In Ignition Switch Signal |
| C15 | LT GRN | 1601 | Steering Column Lock Signal |
| C16 | - | - | Not Used |
| D1 | BLK/WHT | 746 | Right Front Door Ajar Switch Signal |
| D2-D3 | - | - | Not Used |
| D4 | ORN/BLK | 192 | Fog Lamp Switch Output - FRT |
| D5 | LT BLU | 187 | Rear Fog Lamp Switch Signal (Export) |
| D6 | - | - | Not Used |
| D7 | DK BLU | 15 | Right Turn Signal Status Signal |
| D8 | LT BLU | 14 | Left Turn Signal Status Signal |
| D9 | BLK | 1576 | Trunk Release Switch Signal |
| D10 | - | - | Not Used |
| D11 | DK GRN | 306 | Headlamp Switch Headlamps Off Signal |
| D12 | YEL | 243 | Accessory Voltage |
| D13 | PNK | 1039 | Ignition 1 Voltage |
| D14 | DK GRN | 2629 | Steering Column Lock Relay Control |
| D15 | BRN/WHT | 1571 | Traction Control Switch Signal |
| D16 | LT GRN | 1966 | Right Front Turn Signal Relay Control |
Body Control Module (BCM) C3 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A1 | - | - | Not Used |
| A2 | BLK | 150 | Ground |
| A3 | GRY/BLK | 690 | Courtesy Lamp Low Control |
| A4 | ORN | 2540 | Not Used |
| A5 | YEL/BLK | 1784 | Twilight Sentinel Enable Signal |
| A6 | PPL | 1604 | Steering Column Unlock |
| A7 | ORN/BLK | 1976 | Left Front Turn Signal Relay Control |
| A8 | ORN | 1603 | Steering Column Lock |
| B1 | BRN/WHT | 1244 | Instrument Panel Lamp Supply Voltage - 2 |
| B2 | YEL | 390 | Instrument Panel Lamp Supply Voltage - 3 |
| B3 | - | - | Not Used |
| B4 | YEL | 183 | Front Fog Lamp Indicator Control |
| B5 | - | - | Not Used |
| B6 | GRY | 8 | Instrument Panel Lamp Supply Voltage - 1 |
| B7 | YEL/BLK | 625 | Starter Enable Relay Control |
| B8 | TAN | 159 | Key Out Ignition Switch Signal |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.